Atlantis Fritillary (Speyeria atlantis capitanensis)
Sacramento Mountains, Otero County, New Mexico

"foot tasting" Cinquefoil (Potentilla sp.)

ovipositing at the base of (Potentilla sp.)
All texts give "violets" as the sole host plant for the greater fritillaries. I saw females ovipositing in a high mountain meadow (9000'+) and always near the base of Cinquefoil (Potentilla sp.. I saw no violet species in the area.

with grayish eyes ?

with obvious yellowish eyes
In Glassberg (Butterflies through Binoculars - The West - 2001), George Austin discusses the difficult identification and distribution of greater fritillaries in the Great Basin. The taxonomy is not clear at this time. A population of Atlantis Fritillary in Arizona and adjacent New Mexico has yellow eyes, like Aphrodite Fritillary. This also seems to be the case on most in southern New Mexico, in the Sacramento Mountains, however, some appear to have grayish eyes. I am assuming that these are Atlantis Fritillary, because of the listing of (Speyeria atlantis capitanensis) just north of Otero County, New Mexico, in the same mountain chain.
     (Cary, Steven J., and Richard Holland. 1992. New Mexico Butterflies: Checklist, Distribution and Conservation. Journal of Research on the Lepidoptera. 31(1-2):57-82.)

They are passionate about thistles!
images copyright Bob Barber